example.C

#include "MyAnalysis.h"
#include "Plotter.h"
#include <iostream>
#include <TChain.h>
#include <TGraphAsymmErrors.h>
#include <string>

int main() {
   
   float lumi = 50.;
   
   MyAnalysis *A = new MyAnalysis();
   TChain* ch = new TChain("events");
   ch->Add("files/data.root");
   ch->Process(A);
   
   MyAnalysis *B = new MyAnalysis();
   TChain* ch2 = new TChain("events");
   ch2->Add("files/ttbar.root");
   ch2->Process(B);
   
   MyAnalysis *C = new MyAnalysis();
   TChain* ch3 = new TChain("events");
   ch3->Add("files/wjets.root");
   ch3->Process(C);
   
   MyAnalysis *D = new MyAnalysis();
   TChain* ch4 = new TChain("events");
   ch4->Add("files/dy.root");
   ch4->Process(D);
   
   MyAnalysis *E = new MyAnalysis();
   TChain* ch5 = new TChain("events");
   ch5->Add("files/ww.root");
   ch5->Process(E);

   MyAnalysis *F = new MyAnalysis();
   TChain* ch6 = new TChain("events");
   ch6->Add("files/wz.root");
   ch6->Process(F);

   MyAnalysis *G = new MyAnalysis();
   TChain* ch7 = new TChain("events");
   ch7->Add("files/zz.root");
   ch7->Process(G);

   MyAnalysis *H = new MyAnalysis();
   TChain* ch8 = new TChain("events");
   ch8->Add("files/qcd.root");
   ch8->Process(H);
    
   MyAnalysis *I = new MyAnalysis();
   TChain* ch9 = new TChain("events");
   ch9->Add("files/single_top.root");
   ch9->Process(I);

   Plotter P;
   P.SetData(A->histograms, std::string("Data"));
   P.AddBg(B->histograms, std::string("TTbar"));
   P.AddBg(C->histograms, std::string("Wjets"));
   P.AddBg(D->histograms, std::string("DY"));
   P.AddBg(E->histograms, std::string("WW"));
   P.AddBg(F->histograms, std::string("WZ"));
   P.AddBg(G->histograms, std::string("ZZ"));
   P.AddBg(H->histograms, std::string("QCD"));
   P.AddBg(I->histograms, std::string("single Top"));
   
   P.Plot(string("results.pdf"));
   
   Plotter P_MC;
   P_MC.AddBg(B->histograms_MC, std::string("TTbar"));
   P_MC.AddBg(C->histograms_MC, std::string("Wjets"));
   P_MC.AddBg(D->histograms_MC, std::string("DY"));
   P_MC.AddBg(E->histograms_MC, std::string("WW"));
   P_MC.AddBg(F->histograms_MC, std::string("WZ"));
   P_MC.AddBg(G->histograms_MC, std::string("ZZ"));
   P_MC.AddBg(H->histograms_MC, std::string("QCD"));
   P_MC.AddBg(I->histograms_MC, std::string("single Top"));
   P_MC.Plot(string("results_MC.pdf"));

}